Yes! There is an iota client library for Flutter/Dart! Check it out here. We have some client libraries you can use with IOTA on the following programming languages: - JavaScript - Java - Kotlin - Python Check out more information about these clients on our GitHub page here. We at The IOTA Foundation are very happy to offer these ecosystems for people who want to work, play, or create with our technology even more deeply. If there's a language not listed above which you'd like us to provide support for please let us know!